
Answer:
What is total contribution margin = $168,000.00
Explanation:
The contribution margin is the excess of the sales value over the variable cost of sales .
Contribution per unit = selling price  - variable cost between
Contribution margin (%) = contribution / sales × 100
For Schister Systems
Increase in sales by 20% will give sales revenue worth
= 120% ×  350,000
= Â 420,000.00
Contribution margin (%)
= (350,000-210,000)/ 350,000  × 100
= 40%
Total contribution = 40% ×420,000.00
               =  $168,000.00
What is total contribution margin = $168,000.00